Martin Krieger

Today I tried to access a WorkflowService hosted in IIS on Windows 7, and got this nice little error message:
Error: Cannot import wsdl:portType
Detail: An exception was thrown while running a WSDL import extension: System.ServiceModel.Description.DataContractSerializerMessageContractImporterError: Schema with target namespace ‘http://schemas.microsoft.com/2003/10/Serialization/’ could not be found. XPath to Error Source: //wsdl:definitions[@targetNamespace=’http://tempuri.org’]/wsdl:portType[@name=’IService’]
[… lot more stuff ]
Warning: No code was […]

The beta 1 version of Visual Studio 2010 and .NET 4.0 has been released to the general public.
On June 23, 2009 the .NET Usergroup Köln will host several short presentations about the new features (in German). My part will be to talk about the revised version of Windows Workflow Foundation. You are cordially invited. Reservation […]

Until very recently I did not know about the acceptance test framework Fit (Framework for Integrated Test) and its Wiki-GUI FitNesse. But now they’ve been brought to my attention both by Stefan Lieser, who made a very good presentation at Bonn-To-Code, and by a company with long experience using this system for their Java projects.
FitNesse […]

On November the 6th, 2007 I gave a short presentation about WCF Line of Business Adapter (SDK, Blog) at the .NET User Group Köln.
Slides (in German) can be found here.

There is a small bug in .NET 3.0 WCF proxy generation tool:
Using an .asmx web service with a method like
[WebMethod]
[return: XmlAttribute]
public string HelloWorld(int a, [XmlAttribute]int b, int c)
svcutil /serializer:Auto or the AddServiceReference feature in Visual Studio generates a
public void HelloWorld(int a, int c)
proxy method - without any complain or warning. Using svcutil /ser:XmlSerializer works. See […]

On 20th March 2007 I gave a short presentation about .NET and the COM-Interop threading apartments at the .NET User Group Bonn.
Slides and more (in German) here.